| Literature DB >> 35422080 |
Guojian Hu1,2, Keke Wang1,2, Baowen Huang1,2, Isabelle Mila1, Pierre Frasse1,2, Elie Maza1,2, Anis Djari1,2, Michel Hernould3, Mohamed Zouine1,2, Zhengguo Li4, Mondher Bouzayen5,6,7.
Abstract
Understanding the mechanisms underlying differentiation of inflorescence and flower meristems is essential towards enlarging our knowledge of reproductive organ formation and to open new prospects for improving yield traits. Here, we show that SlDOF9 is a new modulator of floral differentiation in tomato. CRISPR/Cas9 knockout strategy uncovered the role of SlDOF9 in controlling inflorescence meristem and floral meristem differentiation via the regulation of cell division genes and inflorescence architecture regulator LIN. Tomato dof9-KO lines have more flowers in both determinate and indeterminate cultivars and produce more fruit upon vibration-assisted fertilization. SlDOF9 regulates inflorescence development through an auxin-dependent ARF5-DOF9 module that seems to operate, at least in part, differently in Arabidopsis and tomato. Our findings add a new actor to the complex mechanisms underlying reproductive organ differentiation in flowering plants and provide leads towards addressing the diversity of factors controlling the transition to reproductive organs.Entities:
Mesh：
Substances：
Year: 2022 PMID： 35422080 DOI： 10.1038/s41477-022-01121-1
Source DB: PubMed Journal: Nat Plants ISSN： 2055-0278 Impact factor: 15.793